604431421 has 24 divisors (see below), whose sum is σ = 708164352. Its totient is φ = 514298400.

The previous prime is 604431403. The next prime is 604431469. The reversal of 604431421 is 124134406.

It is not a de Polignac number, because 604431421 - 2⁷ = 604431293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (604432421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128491 + ... + 133111.

It is an arithmetic number, because the mean of its divisors is an integer number (29506848).

Almost surely, 2^604431421 is an apocalyptic number.

It is an amenable number.

604431421 is a deficient number, since it is larger than the sum of its proper divisors (103732931).

604431421 is a wasteful number, since it uses less digits than its factorization.

604431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4713 (or 4702 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 604431421 is about 24585.1870238971. The cubic root of 604431421 is about 845.5040215148.

Adding to 604431421 its reverse (124134406), we get a palindrome (728565827).

The spelling of 604431421 in words is "six hundred four million, four hundred thirty-one thousand, four hundred twenty-one".